Sajin
Let us know how to cpu swap goes. 

+1
 
Waiting to see how you make out. GL

Cool GTX

Sajin
Let us know how to cpu swap goes. 

+1
 
Waiting to see how you make out. GL

Have no fear, guys - I will report after the CPU swap, as well as any other "adventures".
However, it will probably be a few days after Aug. 24th (payday!).
You guys have been my lifeline through a very frustrating and expensive experience. I don't know what I would have done without your advice and help. 
I really appreciate your help!  Thank you!!!
 
 

Looking forward to your results with the other cpu installed. 

Sushihunter
 
 
Have no fear, guys - I will report after the CPU swap, as well as any other "adventures".
However, it will probably be a few days after Aug. 24th (payday!).
You guys have been my lifeline through a very frustrating and expensive experience. I don't know what I would have done without your advice and help. 
I really appreciate your help!  Thank you!!!
 
 

No problem, solving puzzles while helping other is fun

  Just swapped in the other Q6600 CPU
I'm running with the same BIOS settings used with the old Q6600.
So far (it's been like 15 minutes...) it seems to be running OK
One thing to note is increased CPU Core Temps. - Bouncing all over the place from 86C - 100C, but sticking mostly in the low to mid 90's.
 
I was forced into doing the CPU swap today as things were going from bad to worse with a high potential for total failure.
I couldn't even get a single web page open before it would BlueScreen. After a dozen attempts I just shut it down and went shopping for Thermal compound.
The worst part is that every time it crashes it scrambles all my desktop icons and it takes me 10 minutes or more to put them back where I want them. Then it crashes again and I get to repeat!
 
One thing I'm a little concerned about is the white plastic locking tabs that hold the CPU Cooler to the Motherboard. Several of them were pretty brittle and broke.
Luckily, I had two units and was able to rob from the other one, but I'm not 100% convinced that it is locked down tight. I'll keep an eye on it and hope that it doesn't fall off due to vibration.
Any idea if you can buy replacement parts for them? I'd like to replace all 4 locking tabs with fresh ones.
 
I'm also informed that it takes 36 hours for the Thermal Compound to set and that Temps will drop during that time. - Just checked - Reading 81C - 91C across all 4 cores.
 
I will wait for 36 hours of running time before I torture the new CPU to see if it will crash or not - unless it crashes all on its own...
 
Here's the Thermal Compound I'm using:
http://www.ncix.com/detail/arctic-silver-alumina-premium-ceramic-87-18557.htm
 
After letting this sit for a couple of minutes while doing something in the kitchen, the CPU Core Temps are now 73C - 80C
 
More in a bit...
 

Just finished running the Intel Processor Diagnostic Test - PASSED. (but then so did the old CPU...)
Though Core Temps were higher than the old CPU.
 

Good to hear the blue screens have been fixed after swapping out cpu's. 
 
The cooler most likely isn't fully seated that is why you're seeing very high temps. I wouldn't stress test the processor until you get a new cooler. You can get another stock cooler from ebay for $15 bucks... http://www.ebay.com/itm/G...c2b:g:iyYAAOSwvg9XgGdx

 
Who suggested swapping CPU's anyway? Good job to whoever suggested it.     
 
 
EDIT: Looking through all 4 pages.      ;)

XrayMan
 
Who suggested swapping CPU's anyway? Good job to whoever suggested it.     

I'll let the OP answer this one. 

Any reason you're not using the aftermarket cpu cooler?